Measuring apparatus



Feb. l`l, 1930. EL F. JONES E17-AL l 1,746,776

MEASURING APPARATUS Filed Feb. 27, 1925 2 Sheets-Sheet l Feb. 11, 1930.E. F. JONES ET AL MEASURING APPARATUS 2 sheets-sheet 2 Filed Feb. 27,1925 Patented Feb. 1l, 1930 Unir . STATES EDWIN F. JONES AND T01-INAQAULD, OF ERIE, PENNSYLVANIA, .ASSIGNORS TO ERIE STEEL CONSTRUCTGNCOMPANY, OF ERIE, PENNSYLVANIA,

PENNSYLVANIA A CoRronA'r'ioN'( oF MEASURING .APPARATUS Application filedFebruary 27, 1925.

Measuring devices have heretofore been inade for handling aggregate orpaving purposes. 1t is desirable to prevent any failure of an accuratemeasuring of the materials in order that the mixture may be of uniformquality. Such devices usually havea supply bin from which material issuppliedto a measuring box and it is desirable to compel the closing otthe connection between the supply bin and the box prior to the openingot the measuring box because without this there is a possibility forleakage to pass from the supply bin to the measuring box/during thedischarge of the measuring box and thus augment the amount oit materialwhich the measuring box is designed to supply. Further it is alsodesirable to lock the connection between the supply bin and theiiieasuring box until the closure of the measuring box is accomplishedin order that there may be no leakage from the supply bin throughthenieasuring box prior to the closing oi the measuring box. The presentinvention is designed to accomplish these locking functions. Featuresand details of the invention will appear from the speciication andclaims.

The invention is illustrated in the ac'conr panying drawings as followsFig. 1 is a side elevation of the apparatus, partly in section.

Fig. 2 a section on the line 2-2 in Fig. 1.

F ig. 3 a view ot a portion of the latch locking mech anisin detached.

Fig. 4 an enlarged view of the locking parts with the upper gate open,the lower gate closed and the lower gate locked against opening. n

Fig. 5 a similar view with' the lower gate open and the parts inposition to lock the upper gate.

1 marks the Vaggregate supply bin, 2 the sand bin, and 3 the dischargeopening from the aggregate bin, t a similar opening from the sand bin,and 5 and 6 gates controlling said openings, respectively. Channel 7 oneat each side support the supply bins and are provided with gate rollers8. Angle irons 9 extend along the rollers, the horizontal part of theiron riding on the rollers and the vertical part being secured to theupturned edges serai No; 12,040.

10.01? the gates. The two gates are, theretore, loclred together andopen and close together and are operated by the control rod 9' and lever9b. The aggregate measuring box 11 is directly below` the `bin 1 and asand measuring box 12 directly below the bin 2.

Y The closure of thelower parts of the meas-4 uring boxes isaccomplished by the swinging doors 13 which are pivoted on pins 15 onthe sides of the boxes Catches 16 extend from the doors 13 and arereceived in the notches 17 of the swinging latches 18. rlihe latches 18are pivotally mounted on pins 19 secured to brackets 2() on `the bottomsof the boxes. Ropes 21 extend from the doors 13 over pulleys 22 to aconvenient place of operation by means of which the doors may be closed.The lower part of the latches have the cam surfaces 23 so that thecatches 16`swiiig past the latches to position the latches, the yieldingpermitting the closing of the door. Cords 24 extendfroni the arms 26 onthe latches 18, these cords extending over pulleys 24a to a convenientplace oiz operation. By pulling the cords the latches are swungoutwardly from the position shownin Fig. 4 so as to per init the doors13 to open. Arranged on the arms 26 are adjustable rods 25 which areswung upwardly with the outward swinging of the latches. i The upperends of the rods 25 extend through perforations27 in a strap 28 securedto the channels 7 and in their upper position extend into the pathso'l'the gates 5 and 6, thus preventing the opening of either oi these gatesso long as the latch is swung to positionto release the catch. In orderto hold the rod in this position until tl e lower doors are closed thebails 29 are pivotally secured to the sides ot the box and extendthrough openings 30 in the latches and these openings 30 are notched at31 to receive the hails 29 when the latches are swung to their openposition as shown in Fig. 5 and the doors are opened.` The angle irons21a secured to the bottom of the door and to which the ropes 21 aresecured extend beyond the door suiiiciently to engage the bail as thedoor is lifted so as to lift the bail out of the notch 31 and thuspermit the latch 18 to swing bringing the notch 17 under the catch 16.This swinging movement depresses the rod 25 bringing it out of the pathof the gate and into the position shown in Fig. 4:. In this position thegates may be opened and as they move to open position the bottom of thegate 6 immediately passes over the top of the rod 25 and thus preventsthe raising of the rod 25 and the swinging of the latch 18 to releasethe lower doors until the gate 6 and with it the gate 5 is moved toclosed position. In order that the rod 25 may be readily adjusted Iusually make it in two parts; one part being formed of the pipe 25a andthe other of a screw-threaded portion and provide an adjusting nut 32 bymeans of which it may be lengthened or shortened s0 that it will justclear the path of the gate 6 when in its lower position.

With this construction it will be seen that the lower doors are lockedin their closed position by reason of the fact that the rods can not beswung so long as the gates 5 and 6 are in their open position and thatwhen the gates 5 and 6 are closed and the doors are opened the bailsmaintain the locks in their upper position so that the gates cannot beopened until the doors are again closed. Consequently no leakage ispossible from the supply bin through the measuring boxes and analternate operation of these devices is com pelled.

What we claim as new is 1. In a measuring apparatus, the combination ofa supply bin; a measuring box; a closure gate for the bin; a closuredoor for the box; a latch locking the door in closed position; a lockingbar connected with the latch extending into the path of the gate lockingthe gate in closed position with the latch open and locking the latch inclosed position with the gate open; and means locking the bar ingate-locking position, said means being released by the door in closing.

2. In a measuring apparatus, the combination of a supply bin; ameasuring box; a closure gate for the bin; a closure door for the box; alatch locking the door in closed position; a locking bar connected withthe latch extending into the path of the gate locking the gate in closedposition with the latch open and locking the latch in closed positionwith the gate open; and means comprising a bail locking the latch inopen position, said bail being in the path of the door and released fromthe latch by the action of the door in closing.

In testimony whereof we have hereunto set our hands.

EDWIN F. JONES. JOHN A. AULD.

